Road-grader.



APPLICATION FILED .IUNE23, I9I6I J. D. MARTIN.

ROAD ,QRADER.

Q an L): 1 IIn'Z Patented Jan. 1917.

3 SHEETSSHEET l- J. D. MARTIN.

ROAD GRADER.

mmcmou FH.EDJUNEZ3,1916.

Patenteii Jan. 3: 191?:

3 SHEETS-SHEET 2.

J. D. MARTIN. R AD GRADER. APPLICATION FILEDYJUNEZB. I916.

Patented Jan. 23, 1917.

v u $124.31 9 in 1. h

3 SHEETS SHEET 3.

can sas PATENT orator.

JOHN D. MARTIN, 0F OWENSBORO, KENTUCKY.

ROAD-GIRAIJlEEt.

To all whom it may concern:

Be it known that I, JOHN D. MARTIN, a

citizen of the United States, residing at Owensboro, in the county of Daviess, State of Kentucky, have invented certain new and useful Improvements in Road-Graders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to road scrapers.

One important object of the invention is to provide an improved general construction of road scraper especially designed to perform all of the operations connected with scraping roads, constructing and level- 'ing ditches, covering tile drains, and the like.

Another important object of the invention is to provide an improved form of scraper of this class wherein the parts may be readily adjusted for the varying conditions of use.

7 A third important object of the invention is to provide an improved form of scraper wherein the main scraping blade will at all times out clear of grass, and the like from the edges of the road, except such grass and sods as may be of such character as not to interfere with the proper action of the scraper.

With the above and other objects in view, as will be hereinafter apparent the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically claimed.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure l is a plan view of a scraper constructed in accordance with this invention, and showing the same arranged for use in scraping and grading onehalf of a road; Fig. 2 is a similar plan view showing the position of the parts when the device is used for covering in tile drains, and the like. Fig. 3 is a side elevation of the scraper as arranged in Fig. 2. Fig. 4 is a rear elevation of the scraper as arranged in Fig. 1. Fig. 5 is a detail side elevation of the rear extension of the draft beam. Fig. 6 is a detail section through the line 8-8 of Fig. 1. I

In the embodiment of the invention Specification of Letters Patent. Patented; Jan, 23, 191?,

Application filed June 23, 1916. Serial No. 105,420.

. herein illustrated there is provided a main scraper 10 which has a forwardly curved lower edge. This main scraper is preferably formed of a metallic plate and has its upper edge reinforced by an angle iron stiffener 11. The draft beam for the scraper is composed of spaced upper and lower draft members 12 which are provided with longitudinally spaced openings 13 at the forward end and similarly spaced openings l l at the rear end. Centrally of the angle iron 11 there is provided an opening immediately below which is a keeper 1.5 so that a pin can be passed through one of the openings 1a and into the keeper, the draft beam havingits lower member extending rearwardly of the scraper 10 as at 16 and then bent forwardly as at 17 to receive the lower end of the pivot pin 18. By this means the scraper is pivotally connected to the beam. In order to hold the scraper in angular adjustment to the beam there is provided a link 19 having longitudinally spaced openings 20 and in the angle iron 11 are provided similar openings 21 so that pins 22 may connect one of the openings 20 with the angle iron while a pin 23 passes through a selected opening 13 and one of the openings 20.

At the forward end of the draft beam there is pivoted a vertical shaft 24: adjustable in height by means of the openings 25v and pins 26 and at the lower end of this shaft is carried a pair of groin-l wheels 27. This shaft also carries the clevis 28. By means of this construction the forward end of the draft beam may be raised or lowered as desired.

Pivoted to each end of the angle bar 11 is a member 29 which is held in position by a pin 30 passing through one of the openings 31 in this member. The rearward portion of this member is bent downward and receives the lower end of the pin 30, this lower end passing through a keeper 32. It is to be noted that by reason of there being a plurality of openings 14 and 31 the vertical angle of the main scraper to the beam and the member 29 may be varied at will. Connected to the forward ends of the members 29 is a pair of links 33 which are provided with openings 84 in their free ends. Through a selected opening 13 and a selected opening 34: is a pin 35 which serves to adjust 1e angular relation betveen the member 29 and the beam 12.

Normally, these members 29 are held parallel to the beam but it will be observed that by the proper selection of the openings receiving said pin 25 the angular variation may be adjusted so as to meet any of the varying conditions of use.

Carried on the rear face of the member 10 are brackets 36 to which-arc pivoted the runners 37. This pivoting of the runners serves to permit of great freedom of movement in turning corners and passing along curves in the road while the runners themselves prevent the scraper from digging too deeply into the material to be scraped up, and also aid in rendering the draft light.

Extending rearwardly from each of the members 29 is an arm 38 to which is pivoted a covering scraper 39, best shown in Fig. 2, the two covering scrapers having their rearward portions connected by a cross bar l0 which has downwardly turned ends through which pass the bolts ll, said bolts being received in any one of the openings 4'2 of said covering scrapers. By this means the distance between the rear ends of these covering scrapers may be varied at will. As shown in F 1, these covering scrapers are omitted when thedevice is to be used for ordinary grading and in place of these covering scrapers thereis pivoted to one end of the main scraper 10 a su 'iplemental scraper 43 adapted to prevent side slip of the device after the-manner of a moldboard in a plow and which, is held parallel to the beam 12 by means of an adjustable brace 4t. connected to a rearward extension 1o formed on the beam 12 by means of .the holes at and pin 45. In order to brace this rear,- ward extension against the ground thcreis provided aground engaging disk '46 which is journaled in suitable bearings at the end of the extension 4-5. By this means the member acts to prevent side slip of the scraper. Carried by one of the members 2.),

the member beingthat on which is adjusted forwardly ot the othcr,"in grading, there is a standard t? in which is journalcd a dish wheel 43 of tl1oordinary. plow or harrow type. 'lhis'dislt whc'el cuts the grass and other material. ol like nature at thc'cilge of the road and at. thr same. time coiipcratcs with the guiding scraper to prevent lateral movement.

Where the roadis vi lo and it is desired to scrape a greater portion thcrcol' than an be carried by lhdnu'mbia ll) llH 'OPPOSltU cnd ol the mianbcr 10 has connected thereto a second moi'nbcr l3 which is held in parallel position to the member l l by chains L9 to which an additional team may be attached.

'lhcf device is provided with the usual drivers seat as seen in Figs. l-and fl. It will thus be seen that the device may be used a plain grader or scraper, or an extenmca us of dra l't '29 are adjusted with respect to the bcam'12 the said members will at all times remain parallel to the beam independently of the adjustment of the member 10 withrespect thereto, the member 29, beam, and links 33 forming when properly adjusted a parallel motion device. There hasthus been provided a simple and eliicicnt device otthe kind described and for the purpose specified. It is obvious that many minor changes may be made in the form and'construction,

of the invention without departing from the material principles thereof. It is-nottherelore desired to confine the invention to the exact form herein shownand described but it is wished to include all such' as properly come within the scope claimed.

hat is claimed -1s:-.

1. In a road rader. the combination with a dralt beam; ol. a scraper pivoted intermediate its ends to said beam, means to hold the scraper-in adjusted angular relation: a supplen'icnta-l scraper blade having its "forward end pivoted to one end of 'lhe main SCl'allHil, and means norn ially holding said snpplenwntal scraper parallel to thc'bcam indepmnlen-tly of the angular relationof the main scrap v and beam. l

In a.'roadgradcr, the con'ibination with a draft beam; of a 'sc-r-apcr pivotcd"intcrmediate its ends tosaid beam, means to'hold the scraper in ailljustcdangular relation. a supplemental sc'rapeif'bladchaving its forward end pivoted to one-end of the main' scraper, and means normally holding said supplemental s raper parallel to the beam imlcpcndcntly ol the angular relation of the inain S('I';l|) .i' and beanif, said last means bein; adjustable to vary the angular relation between the supj'ilcmcntal scraper and the beani and including an element arranged to hold themcans in adjusted 'rosition.

3. ln a road grader, the combination with a. dra'lt beam: of a scraper p'notral intcrmc dialo its ends to said beam, means to hold the scraper in ad usted angular relation. a supplcmcntal scraper hladc'having its 'lorward end p-i\'otcd.l;o one end of the main sc u-ipcr,

a rearward extension on the brain. a gr n-1nd engaging disk wheel carried by said .cxtcn- 'sion,'and a brace connectingv th'c cxtenrion with the supplemental scraper.

-l. ln-a. road grader, the combination with a dral't beam; of a scraper pivotcd intcrmediatc its ends to said beam, means to hold the jza 1 5 mediate 25 diate its 35 beam, and a disk scraper in adjusted angular relation, a supplemental scraper blade having its forward end pivoted to one end of the main scraper, and means normally holding said supple- 5 mental pendently of the angular relation of the main scraper and beam, said last means bw ing adjustable to vary the angular relation between the supplemental scraper and the 10 beam, said last means comprising an extension on the beam, and a brace connecting the extension with the supplemental scraper,

5. In a road grader, the combination with a draft beam; of a scraper pi oted interits ends to said beam, means to hold the scraper in. adjusted angular relation, a supplemental scraper blade having its for- Ward end pivoted to one end of the main scraper, and a disk Wheel carried in ad- 20 vance of the forward end or" the main 30 supplemental scraper parallel to the beam independently of the angular relation of the main scraper and beam, .aid last means being adjustable to vary the angular relation between the supplemental scraper and the Wheel carried in advance of the forward end of the main scraper and cooperating with the supplemental scraper.

scraper parallel to the beam incle- 8. In a road grader, the combination with a draft beam, of a scraper pivoted intermediate its ends to said bean], means to hold the scraper in adjusted angular relation, a supplemental sc aper blade having its for ward end pivoted to one end of the main scraper, and means normally holding said supplemental scraper parall to the beam independently of the angular relation of the main scraper and beam, said last means being adjustable to vary the angular relation. between the supplemental scraper and the beam, a disk Wheel carried. in advance of the forward end of the rnain scraper and e .operating with the supplemental scraper,

rearward extension on the beam, ground engaging disk Wheel carried by said extension.

in testimony whereof, I. ailhr my ture, in the presence of two witnesses I ilflllt' iblo Witnesses Louise linear-ran, W. ll, MILLER. 

